JP2003227660A - Heating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the quantity of radiation by efficiently transmitting heat of combustion gas to a radiation surface in a radiation heater. <P>SOLUTION: This heating system is composed of a heat gathering surface 34 heated by heat of high temperature gas, a radiator heated by the high temperature gas, having the radiation surface 35 for generating radiation energy, and provided with a hole 36 penetrating through the radiation surface 35 from the heat gathering surface 34, a heating duct 19 for introducing the high temperature gas to the heat gathering surface 34, and conducting heat of a high temperature gas generating means to the radiator, a guard 20 such as a wire net for passing at least a part of radiation generated by the radiation surface, and a deflecting plate 22 for deflecting wind sent by an air blowing means to a guard surface. The radiation surface is heated from both surfaces of a radiation surface 25 and the heat gathering surface 34. A heat transfer coefficient of the radiator is improved by breaking a boundary layer by the hole 36. High temperature heat of the high temperature gas generating means is transmitted to the radiator 33 by conduction, and the radiation surface 35 becomes a high temperature, and increases a radiation quantity generated by the radiation surface. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device using combustion heat, and more particularly to a heating device using radiant heat.

[0002]

2. Description of the Related Art A conventional heating device of this type is disclosed in Japanese Utility Model Publication No. 63-
What was described in the 11548 gazette was general. As shown in FIG. 11, this heating device is provided with a burner 1 provided in the lower part of the main body, a hollow thin box-shaped heat exchanger 2 for passing combustion gas from the burner 1, and both sides of this heat exchanger 2. Vertical opening 3 and far-infrared paint 4 applied on at least the front surface of the heat exchanger 2.
And a convection fan 5 that blows indoor air to the heat exchanger 2 to exchange heat with the heat exchanger 2 and discharge it as hot air from the main body outlet.
The heat exchanger 2 has a hollow inside so that the combustion gas 6 from the burner 1 passes therethrough and a passage 7 is provided, and the passage 7 is formed so that the combustion gas 6 is spread to each part of the heat exchanger 2. A concave bead 8 is provided on a part of the bead 8 and the bead 8 is discharged from the opening 3.

Then, the combustion gas 6 generated in the burner 1 is passed through the heat exchanger 2 and heated to 300 ° C. to 500 ° C., so that far infrared rays are radiated from the front surface coated with far infrared paint to perform radiant heating. . At the same time, the indoor air taken in by the convection fan 5 is blown along the rear surface of the heat exchanger 2, mixed with the combustion gas 6 discharged from the opening 3 of the heat exchanger 2, and discharged as warm air into the room. It was supposed to do wind heating.

[0004]

However, in the above conventional heating device, the combustion gas flows into the heat exchanger and heats the heat exchanger by convective heat transfer, but the convective heat transfer amount Qc is (Equation 1). As shown, it is proportional to the difference between the heat exchanger temperature and the combustion gas temperature, but the radiation amount Qr from the heat exchanger is the fourth power of the temperature of the heat exchanger and the temperature of the radiation heat absorption surface as shown in (Equation 2). It is proportional to the fourth power difference.

[0005]

[Equation 1]

[0006]

[Equation 2]

In the structure of the heat exchanger of the conventional heating device, the areas of the combustion gas and the heat exchanger are almost equal, and the heat transfer coefficient of the heat exchanger is about 10 W / m2K because it is a flat plate. In order to raise the chamber temperature to 300 ° C, it is necessary to increase the temperature difference between the combustion gas temperature and the panel member, and the temperature of the combustion gas introduced into the panel member must be as high as about 870 ° C. The vessel had to be made of a material that could withstand high temperatures, and the flame generated by the burner had to heat the heat exchanger directly. Further, the combustion gas in the heat exchanger passage has a problem that the thickness of the boundary layer increases as the flow becomes downstream, and the temperature of the heat exchanger decreases near the open end rather than near the burner. Furthermore, since the radiation surface and the hot air outlet are different, there is a problem that the heating feeling is weak at the time of heating, such as when heating is started. Furthermore, since the front of the heat exchanger gets hot, if a guard is provided,
There was a problem that the guard became hot due to radiation.

Further, there is a problem that the temperature of the main body becomes high because the temperature of the entire heat exchanger becomes high.

[0009]

In order to solve the above-mentioned problems, the present invention provides a high temperature gas generating means comprising a burner and a combustion cylinder for generating high temperature gas, a heat collecting surface heated by the heat of the high temperature gas and a high temperature. A radiant body that has both a radiant surface that is heated by gas and that generates radiant energy, and that guides hot gas to the radiant surface and the heat collecting surface of the radiant body and heats the hot gas generating means. A heating duct for conducting heat to the radiant body, a guard such as a wire mesh for transmitting at least a part of the radiation generated on the radiating surface, a blowing means, and a deflection for diverting the wind blown by the blowing means to the guard surface. It is configured to include a plate.

According to the above-described embodiment, the high temperature gas is guided to the radiation surface and the heat collecting surface of the radiator by the heating duct and becomes an ascending air current, which heats the radiation surface from both the radiation surface and the heat collecting surface. The heat transfer area at the time of heat transfer to is doubled, and the heat of the high temperature gas is efficiently transferred to the radiator. Furthermore, the high-temperature heat of the high-temperature gas generating means is transmitted to the radiator by conduction or the like, so that the radiation surface becomes high in temperature and the amount of radiation generated on the radiation surface increases.

When the radiant energy generated on the radiating surface is transmitted through the guard, a part of the radiant energy is absorbed by the guard and raises the temperature of the guard. However, since the guard is cooled by the wind sent by the blowing means, the radiant energy of the guard is reduced. The temperature rise is suppressed. Further, the air after cooling the guard is mixed with the high-temperature gas after the heat exchange of the radiant body and becomes a hot air of about 80 ° C., which is blown out from the guard and combined with the radiation improves the feeling of heating in front of the guard.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A heating device according to claim 1 of the present invention comprises a high temperature gas generating means comprising a burner and a combustion cylinder for generating high temperature gas, a heat collecting surface heated by the heat of the high temperature gas and a high temperature. A radiant body that has both a radiant surface that is heated by gas and that generates radiant energy, and guides hot gas to the radiant surface and the heat collecting surface of the radiant body and heats the hot gas generating means. A heating duct for conducting heat to the radiant body, a guard such as a wire mesh for transmitting at least a part of the radiation generated on the radiating surface, a blowing means, and a deflection for diverting the wind blown by the blowing means to the guard surface. It is configured with a plate.

According to the above-described embodiment, the high temperature gas is guided to the radiation surface and the heat collecting surface of the radiator by the heating duct and becomes an updraft to heat the radiation surface from both the radiation surface and the heat collecting surface. The heat transfer area at the time of heat transfer to is doubled, and the heat of the high temperature gas is efficiently transferred to the radiator. Furthermore, the high-temperature heat of the high-temperature gas generating means is transmitted to the radiator by conduction or the like, so that the radiation surface becomes high in temperature and the amount of radiation generated on the radiation surface increases.

When the radiant energy generated on the radiating surface is transmitted through the guard, a part of the radiant energy is absorbed by the guard and raises the temperature of the guard. However, since the guard is cooled by the wind sent by the air blowing means, the guard of radiation is generated. The temperature rise is suppressed. Further, the air after cooling the guard is mixed with the high-temperature gas after the heat exchange of the radiant body and becomes a hot air of about 80 ° C., which is blown out from the guard and combined with the radiation improves the feeling of heating in front of the guard.

According to a second aspect of the present invention, there is provided a heating device including a burner and a combustion tube, a high-temperature gas generating means, a heat collecting surface heated by the heat of the high-temperature gas and the high-temperature gas, and radiant energy is generated. A radiant body having a radiating surface which has a hole penetrating from the heat collecting surface to the radiating surface, and heating for guiding the high temperature gas to the heat collecting surface and conducting the heat of the high temperature gas generating means to the radiant body. A duct, a guard such as a wire mesh that transmits at least a part of the radiation generated on the radiation surface, an air blowing unit, and a deflection plate that diverts the air blown by the air blowing unit to the guard surface. is there.

According to the above-described embodiment, the high temperature gas becomes an ascending air current through the hole and heats the radiant surface from both the radiant surface and the heat collecting surface. Therefore, the heat transfer area when the high temperature gas transfers heat to the radiator is It doubles, and since the boundary layer is broken by the holes and the heat transfer coefficient of the radiator is improved, the heat of the high-temperature gas is efficiently transferred to the radiation surface. Furthermore, the high-temperature heat of the high-temperature gas generating means is transmitted to the radiator by conduction or the like, so that the radiation surface becomes high in temperature and the amount of radiation generated on the radiation surface increases.

When the radiant energy generated on the radiating surface passes through the guard, a part of the radiant energy is absorbed by the guard and raises the temperature of the guard. However, since the guard is cooled by the wind sent by the blowing means, the temperature of the guard due to radiation is increased. The rise is suppressed. Further, the air after cooling the guard is mixed with the high-temperature gas after the heat exchange of the radiant body and becomes a hot air of about 80 ° C., which is blown out from the guard and combined with the radiation improves the feeling of heating in front of the guard.

A heating device according to a third aspect of the present invention has a structure in which an oxidation catalyst such as platinum is carried on the radiation surface and the heat collection surface of the radiator.

With the above construction, the high temperature gas becomes an updraft by the heating duct to heat the radiant surface from both the radiating surface and the heat collecting surface, and the high temperature heat of the high temperature gas generating means is transmitted to the radiating body by conduction or the like. Becomes hot. Unburned hydrocarbons generated by high-temperature gas generating means such as burners,
Volatile organic compounds such as formaldehyde in indoor air,
Particulate organic matter such as mite feces is guided to the radiation surface and the heat collecting surface of the radiator to be oxidatively decomposed.

A heating device according to a fourth aspect of the present invention has a structure in which an oxidation catalyst having a high emissivity, such as iron oxide, manganese oxide, or chromium oxide, is carried on both the radiation surface and the heat collection surface of the radiator. There is.

With the above structure, high temperature gas is generated by the flame burned by the burner, and the combustion cylinder has a temperature of about 500 ° C.
Become hot. The hot gas becomes an upward airflow by the heating duct to heat the radiant surface from both the radiating surface and the heat collecting surface, and the high-temperature heat of the hot gas generating means is transmitted to the radiator by conduction or the like. Further, the radiant energy from the combustion cylinder is absorbed by the metal oxide having a high emissivity carried on the heat collecting surface, and the temperature of the radiant body becomes higher. Unburned hydrocarbons, volatile organic compounds such as formaldehyde in indoor air, and particulate organic matter such as mite feces generated by high-temperature gas generating means such as burners are the radiation surface and heat collection surface of the radiator. And is oxidatively decomposed.

Further, a large amount of radiant energy is generated from the metal oxide having a high emissivity and carried on the radiating surface, so that the heating feeling is improved.

In the heating device according to claim 5 of the present invention, the high temperature gas generating means is cooled near the upper plate so that the air generated by the air blowing means is blown to at least one of the high temperature gas generating means and the heating duct. The structure is provided with a wind inlet and a heating duct cooling air inlet.

With the above structure, the introduced wind cools the upper part of the combustion cylinder and the upper part of the heating duct, so that the temperature rise of the main body can be suppressed.

The heating device according to claim 6 of the present invention has a configuration in which a change plate is provided around the guard.

With the above construction, when the radiant energy generated on the radiating surface passes through the guard, a part of the radiant energy is absorbed by the guard and raises the temperature of the guard, but since the guard is cooled by the air blown by the blowing means, the guard by radiation is generated. Suppresses temperature rise. Further, since the air sent from the blowing means first hits the change plate around the guard, the circumference of the guard is cooled particularly well, heat conduction to the main body is prevented, and the temperature rise of the main body is prevented.

The heating device according to the seventh aspect of the present invention has a structure in which the air generated by the air blowing means is made to flow above the guard.

With the above structure, when the radiant energy generated on the radiating surface passes through the guard, a part of the radiant energy is absorbed by the guard and raises the temperature of the guard. The temperature rise above is suppressed. Further, it is possible to suppress the rise of warm air discharged from the guard after heat exchange, and improve the heating feeling in front of the main body.

[0029]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a horizontal sectional view of a heating apparatus according to a first embodiment of the present invention, and FIG. 2 is a vertical sectional view.

Reference numeral 11 is a high temperature gas generating means for generating high temperature gas, which is composed of a burner 14 and a combustion cylinder 15 for vaporizing and burning the fuel from the fuel pump 12 in the vaporizer 13.
Reference numeral 6 is a radiator having both a heat collecting surface 17 heated by the heat of the high temperature gas and a radiation surface 18 heated by the high temperature gas and generating radiant energy. Radiant surface 18 and heat collecting surface 17
The high temperature gas is introduced into the radiant body 1 and the heat of the combustion cylinder 15 which becomes about 500 ° C. when the high temperature gas generating means 11 is burned.
6, a heating duct 19 for conducting heat, a guard such as a wire mesh or a perforated plate for transmitting at least a part of the radiant energy generated on the radiating surface 18, and a blowing means 21 such as a fan,
It has a configuration including a deflecting plate 22 that deflects the wind blown by the blower along the surface direction of the guard 20.

According to the above-described embodiment, the high-temperature gas 23 generated by the high-temperature gas generating means is guided to the radiator 16 by the heating duct 19 to become the ascending air current 24, which heats the heat-collecting surface 17 and from the exhaust port 25 above the radiator 16. It is discharged to the radiation surface 18 side. Further, the high-temperature gas is guided to the radiation surface 18 from the outlet 26 below the radiator 16 and becomes an updraft 28 to heat the radiation surface 18. Therefore, since the radiation surface 18 is heated from both the radiation surface 18 and the heat collecting surface 17, the heat transfer area when the high temperature gas transfers heat to the radiator 16 is doubled, and the heat of the high temperature gas is efficiently transferred to the radiator. It is transmitted to 16. Further high temperature gas generating means 1
The high-temperature heat of 1 is transmitted to the radiator 16 by conduction or the like, and the radiator 16 is further heated to increase the amount of radiation generated on the radiation surface 18.

When the radiant energy generated on the radiating surface 18 passes through the guard 20, part of the radiant energy is absorbed by the guard 20 and raises the temperature of the guard 20, but the wind 29 sent by the blowing means 21 cools the guard. As a result, the temperature rise of the guard due to radiation can be suppressed. Further, the air after cooling the guard is mixed with the high temperature gas after heat exchange of the radiant body and becomes hot air 30 of about 80 ° C., which is blown out from the guard 20 and is combined with the radiation to improve the heating feeling on the front surface of the guard.

A part 32 of the air blown by the air blowing means 21 passes above the heating duct to prevent the temperature rise of the main body 31. Further, the wind blows from above the guard 20, and the guard 20
It prevents the temperature from rising upward and suppresses the rise of warm air to improve the feeling of heating in front of the main unit.

(Embodiment 2) FIG. 3 is a horizontal sectional view of a heating apparatus according to Embodiment 2 of the present invention, FIG. 4 is a vertical sectional view, FIG. 5 is a perspective view of a radiator, and FIG. 6 is a sectional view of a radiator. is there.

Reference numeral 11 denotes a high temperature gas generating means for generating a high temperature gas, which is composed of a burner 14 and a combustion cylinder 15 for vaporizing and burning the fuel from the fuel pump 12 in the vaporizer 13.
3 has a heat collecting surface 34 that is heated by the heat of the high temperature gas and a radiation surface 35 that is heated by the high temperature gas and that generates radiant energy.
As shown in FIG. 6, it is a radiant body having 36 holes penetrating therethrough, and an oxidation catalyst having a high emissivity composed of a metal oxide such as iron oxide, manganese oxide or chromium oxide on the heat collecting surface 34 and the radiant surface 35. 37 is carried. A heating duct 19 that guides the high-temperature gas to the heat-collecting surface 34 of the radiant body 33 and that conducts the heat of the combustion cylinder 15 that becomes about 500 ° C. when the high-temperature gas generating means 11 burns to the radiant body 33. A guard 20 such as a wire mesh or a perforated plate that transmits at least a part of the radiant energy generated on the radiant surface 18, a blower 21 such as a fan, and a wind blown by the blower 21 along the surface direction of the guard 20. It has a configuration including a diverting plate 22 for diverting.

According to the above embodiment, the high temperature gas 23 generated by the high temperature gas generating means is guided to the radiant body 33 by the heating duct 19 to become the ascending airflow 38 which heats the heat collecting surface 34 and also through the hole 36. 39 and radiation surface 3
The radiation surface 35 is heated from both the surface 5 and the heat collecting surface 34. Therefore, the heat transfer area when the high-temperature gas transfers heat to the radiator 33 is doubled, and the boundary layer is broken by the holes to improve the heat transfer coefficient of the radiator 33, so that the heat of the high-temperature gas is efficiently transferred. It is often transmitted to the radiator 33. Further high temperature gas generating means 1
The high temperature heat of 1 is transmitted to the radiator by conduction etc. and the radiator 3
3 becomes even higher in temperature, and the amount of radiation generated on the radiation surface 35 increases.

Further, the radiant energy from the combustion cylinder 15 is absorbed by the high emissivity metal oxide 37 carried on the heat collecting surface 34, and the radiant body 33 becomes higher in temperature. Unburned hydrocarbons generated by the high temperature gas generating means 11 such as a burner,
Volatile organic compounds such as formaldehyde in indoor air,
The particulate organic matter such as mite feces is emitted from the radiation surface 3 of the radiator 33.
5. It is guided to the heat collecting surface 34 and is oxidized and decomposed.

When the radiant energy generated on the radiating surface 35 passes through the guard 20, part of the radiant energy is absorbed by the guard 20 and raises the temperature of the guard 20, but the wind 29 sent by the blowing means 21 causes the guard 20 to move. Since it is cooled, the temperature rise of the guard 20 due to radiation can be suppressed. Further, the air after cooling the guard is mixed with the high temperature gas after the heat exchange of the radiant body for about 8
The warm air 30 of 0 ° C. is blown out from the guard 20 and combined with the radiation improves the heating feeling in front of the guard 20.

A part 32 of the air blown by the air blowing means 21 passes above the heating duct to prevent the temperature rise of the main body 31. Further, the wind blows from above the guard 20, and the guard 20
It prevents the temperature from rising upward and suppresses the rise of warm air to improve the feeling of heating in front of the main unit.

(Embodiment 3) FIG. 7 is a vertical sectional view of a heating device according to Embodiment 3 of the present invention.

In the present embodiment, in the structure of the second embodiment, the hot air generating means cooling air inlet 40 is provided above the combustion tube 15 of the hot gas generating means 11, and the heating duct 19 is heated above. The duct cooling air intake 41 is provided. The components having the same numbers as those in the second embodiment have the same functions.

According to the above embodiment, a part of the air generated by the air blowing means 21 is sent to the upper surface of the combustion cylinder 15 as the cooling air 42, and a part of the air generated by the air blowing means 21 is used as the cooling air 43 as a heating duct. Since the air is blown to the upper surface and the upper part of the combustion cylinder and the upper part of the heating duct are cooled respectively, the temperature rise of the main body 31 can be suppressed.

When the amount of combustion of the high temperature gas generating means increases and the temperature of the high temperature gas 23 increases, the blowing means 2
By increasing the rotation speed of 1, the amount of the cooling air 42, 43 is increased, the temperature of the rising airflow 38, 39 to the radiator 33 can be lowered, and the temperature rise of the radiator 33 can be prevented.

(Embodiment 4) FIG. 8 is a horizontal sectional view of a heating apparatus according to a fourth embodiment of the present invention, FIG. 9 is a vertical sectional view, and FIG. 10 is a perspective view of a guard according to the fourth embodiment.

In this embodiment, a change plate 45 is provided around the guard 44 in the structure of the second embodiment. The components having the same numbers as those in the second embodiment have the same functions.

According to the above embodiment, when the radiant energy generated on the radiant surface 35 passes through the guard 44, a part of the radiant energy is absorbed by the guard 44 and raises the temperature of the guard 44.
Since the guard 44 is cooled by the wind sent by, the temperature rise of the guard 44 due to radiation is suppressed. Also,
Since the air blown from the blower 21 first hits the change plate 45 around the guard 44, the periphery of the guard 44 is cooled particularly well, heat conduction to the main body is prevented, and the temperature rise of the main body is prevented.

[0048]

As described above, according to the heating device of the present invention, the high-temperature gas is guided by the heating duct to the radiating surface and the heat collecting surface of the radiant body and becomes an updraft, and is radiated from both the radiating surface and the heat collecting surface. As the surface is heated, the high-temperature heat of the high-temperature gas generating means is transmitted to the radiator by conduction or the like, so that the radiation surface becomes high in temperature and the amount of radiation generated on the radiation surface increases. Further, since the guard is cooled by the wind blown by the blowing means, the temperature rise of the guard due to radiation can be suppressed. Further, the air after cooling the guard is mixed with the high temperature gas after the heat exchange of the radiator to about 80
It becomes hot air of ℃ and blows out from the guard, and combined with radiation, the feeling of heating in front of the guard is improved.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view of a heating device according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the heating device according to the first embodiment.

FIG. 3 is a horizontal sectional view of a heating device according to a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of the heating device according to the second embodiment.

FIG. 5 is a perspective view of a radiator of the heating device according to the second embodiment.

FIG. 6 is a sectional view of a radiator of the heating device according to the second embodiment.

FIG. 7 is a vertical sectional view of a heating device according to a third embodiment of the present invention.

FIG. 8 is a horizontal sectional view of a heating device according to a fourth embodiment of the present invention.

FIG. 9 is a vertical sectional view of a heating device according to the fourth embodiment.

FIG. 10 is a perspective view of a guard of the heating device according to the fourth embodiment.

FIG. 11 is a perspective view showing a main part of the conventional heating device by cutting out a part thereof.

[Explanation of symbols]

11 High-temperature gas generating means 16 33 Radiant 17 34 Heat collecting surface 18 35 Radiant surface 19 Heating duct 20 44 Guard 21 Blower means 22 45 Deflection plate 36 holes 37 Oxidation catalyst

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3K070 DA01 DA06 DA26 DA54                 3L028 AB01 AB04 AC04                 3L050 BC01

Claims (7)

[Claims] 1. A high temperature gas generating means for generating a high temperature gas, and a heat collecting surface heated by the heat of the high temperature gas and a radiation surface heated by the high temperature gas for generating radiant energy. A radiator, a heating duct that guides the high-temperature gas to the radiation surface and the heat-collecting surface of the radiator and conducts heat of the high-temperature gas generating means to the radiator, and at least the radiation generated on the radiation surface. It is equipped with a guard that allows a part to pass through, a blowing means, and a deflection plate that diverts the air blown by the blowing means to the guard surface, and the high temperature gas heats the radiator from both the radiation surface and the heat collection surface. Heating system. 2. Radiation having a hole provided with both a high temperature gas generating means for generating a high temperature gas, a heat collecting surface heated by the heat of the high temperature gas and a radiant surface for generating radiant energy. A body, a heating duct that guides high-temperature gas to the heat-collecting surface of the radiant body and conducts heat of the high-temperature gas generating means to the radiant body, and a guard that transmits at least a part of the radiation generated on the radiant surface. And a ventilation means,
Equipped with a deflection plate that redirects the air blown by the air blower to the guard surface, high temperature gas also flows from the radiator heating air passage to the radiator radiation surface, heating the radiation surface from both the heating air passage side and the radiation surface side. A heating device configured to do so. 3. The heating device according to claim 1, wherein an oxidation catalyst is carried on the radiation surface and the heat collecting surface of the radiator. 4. The heating device according to claim 3, wherein a metal oxide such as iron oxide, manganese oxide, or chromium oxide is used as the oxidation catalyst. 5. The heating device according to claim 1, wherein the air generated by the air blower is sent to at least one of the high temperature gas generator and the heating duct. 6. The heating device according to claim 1, wherein the guard is provided with a change plate. 7. The heating device according to claim 1, wherein air is blown above the guard.